Description : Saddle key is more suitable than sunk key for heavy duty applications. a) True b) False
Last Answer : b) False
Description : Kennedy key is used in (A) Light duty applications (B) Heavy duty applications (C) High speed applications (D) Precision equipments
Last Answer : (B) Heavy duty applications
Description : _______is suitable as a lubricant for heavy-duty applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air
Last Answer : (b) Lubricating oil
Description : Hollow saddle key is superior to flat saddle key as far as power transmitting capability is concerned. a) True b) False
Description : Saddle key is transmit power or torque through friction resistant only A. True B. False
Last Answer : A. True
Description : In sunk key no slips occurs A. True B. False
Description : The key, which fits in the keyway of hub, only is called, (A) Saddle key (B) Feather key (C) Woodruff key (D) Kennedy key
Last Answer : (A) Saddle key
Description : The main advantage of sunk key is that it is a _____ drive. a) Positive b) Negative c) Neutral d) None of the listed
Last Answer : a) Positive
Description : A sunk key fits in the keyway of the _____ only. a) Hub b) Sleeve c) Both hub and sleeve d) Neither hub nor sleeve
Last Answer : a) Hub
Description : Sunk key is a .............. drive. A. Positive B. Negative C. Neutral D. None
Last Answer : A. Positive
Description : Sunk key fits in the keyway of the .......... only. A. Sleeve B. Hub C. Both sleeve and hub D. neither sleeve and hub
Last Answer : B. Hub
Description : In case of sunk key, (A) The keyway is cut in the shaft only (B) The keyway is cut in the hub only (C) The keyway is cut in both the shaft and the hub (D) None of the above
Last Answer : (C) The keyway is cut in both the shaft and the hub
Description : The key in the form of semi-circular disk of uniform thickness is called, (A) Sunk key (B) Feather key (C) Woodruff key (D) Kennedy key
Last Answer : (C) Woodruff key
Description : The type of key used when the gear is required to slide on the shaft is (A) Sunk key (B) Feather key (C) Woodruff key (D) Kennedy key
Last Answer : (B) Feather key
Description : The piston pin bearings in heavy-duty diesel engines are (a) needle roller bearings (b) tapered roller bearings (c) spherical roller bearings (d) cylindrical roller bearings
Last Answer : (a) needle roller bearings
Description : Cocentric springs are used in (A) Heavy duty diesel engines (B) aircraft engines (C) railroad suspensions (D) all of the above
Last Answer : (D) all of the above
Description : Which of the following isn’t the property of a taper roller bearing? (a) High rigidity (b) Easy dismantling (c) Take low radial and heavy loads (d) It is unsuitable for high speed applications
Last Answer : (c) Take low radial and heavy loads
Description : The most suitable bearing for carrying very heavy loads with slow speed is (a) Hydrodynamic bearing (b) ball bearing [IAS 1994] (c) Roller bearing (d) hydrostatic bearing
Last Answer : (d) hydrostatic bearing
Description : Feather key can be used to prevent axial motion between two elements. a) True b) False
Description : ________is suitable as a lubricant for low and moderate loads applications of rolling contact bearing. (a) Grease (b) Lubricating oil (c) Graphite (d) Air
Last Answer : (a) Grease
Description : 'Tis found in our troubles, 'tis mixed with our pleasures, 'Tis laid up above with our heavenly treasures; 'Tis whispered in heaven, and 'tis muttered in hell, And it findeth a place in each sybilline ... is floating away on the broad stream of time, Yet it findeth a place in eternity's cl -Riddles
Last Answer : The letter E.
Description : Thickness of plate is required more in welding than in riveting. a) True b) False
Description : The strength of hollow shaft is more than the strength of solid shaft of same weight. a) True b) False
Last Answer : a) True
Description : The stiffness of solid shaft is more than the stiffness of hollow shaft with same weight. a) True b) False
Description : For the majority of bearings, actual life is considerably greater than rated life. (a) True (b) False
Last Answer : (a) True
Description : A cylinder roller creates lesser noise than a deep groove ball bearing. (a) True (b) False
Last Answer : (b) False
Description : If fluid film pressure is high and surface rigidity is low than mode of lubrication is called as elastohydrodynamic lubrication. a) True b) False
Description : For majority of bearings, actual life is considerably greater than rated life. a) True b) False
Description : Cylinder roller creates lesser noise than deep groove ball bearing. a) True b) False
Description : Compressed length is smaller than the solid length. a) True b) False
Description : Strength of parallel fillet weld is greater than strength of transverse fillet weld. a) True b) False
Description : Cold riveting holds the connected parts better than hot riveting. a) True b) False
Description : The static load carrying capacity of fine threads is greater than that of coarse threads. a) True b) False
Description : Solid shaft is costlier than hollow shaft of same weight. a) True b) False
Description : In manual assembly, cost of screw is higher than the cost of driving a screw. a) True b) False
Description : Assertion (A): Hydrostatic lubrication is more advantageous when compared to hydrodynamic lubrication during starting and stopping the journal in its bearing. Reason (R): In hydrodynamic lubrication, the fluid film pressure is ... (c) A is true but R is false (d) A is false but R is true
Last Answer : (b) Both A and R are individually true but R is not the correct explanation of A
Description : The bearings of heavy series have capacity __________ over the medium series. (a) 10 to 20% (b) 20 to 30% (c) 30 to 40% (d) 40 to 50%
Last Answer : (b) 20 to 30%
Description : Which one of the following bearing is intended for a very heavy radial load? (a) Ball bearing (b) Self-aligning roller bearing (c) Roller bearing (d) Thrust bearing
Last Answer : (b) Self-aligning roller bearing
Description : Deep groove ball bearings are used for (a) heavy thrust load only (b) the small angular displacement of shafts (c) radial load at high speed (d) combined thrust and radial loads at high speed
Last Answer : (d) combined thrust and radial loads at high speed
Description : A rolling contact bearing is specified as X307. Determine the series. a) Extra light series b) Light series c) Medium series d) Heavy series
Last Answer : c) Medium series
Description : Which of the following isn’t the property of taper roller? a) High rigidity b) Easy dismantling c) Take low radial and heavy loads d) All are the properties of tapper roller
Last Answer : c) Take low radial and heavy loads
Description : One which is applicable to a welded joint (i)Less rigidity (ii) Heavy (iii) Difficult process (iv) None
Last Answer : (iv) None
Description : Keyed joints never lead to stress concentration on shafts. a) True b) False